Question

For the following code in my home work shows an error The type or namespace name ‘boolean’ could not be found

          class LinkedList
   {
private Node first;
public LinkedList()
{
    first = null;
}
public boolean isEmpty()
{
    return (first == null);
}
public void insert(int val)//inserts at beginning of list
{
    Node newNode = new Node(val);
    newNode.next = first;
    first = newNode;
}
public Node delete()//deletes at beginning of list
{
    Node temp = first;
    first = first.next;
    return temp;
}

Every where on the internet i found almost similar question but are not exactly for boolean,
Someone please help me out. By the way i am learning c# for 3-4 says.

Answer 1

It’s bool (lowercase b) or Boolean in C#. Consider using bool though since it’s much shorter and more consistent with other languages (except Java…).

The bool keyword is an alias of System.Boolean.

Source: http://msdn.microsoft.com/en-us/library/c8f5xwh7%28VS.71%29.aspx